Fire-retardant thread
Specialty Fabrics Review | June 2010
Problem: The thread, as well as the fabric, needs to be fire retardant to truly meet FR requirements.
Solution: Ultimate K Fire Break™ sewing thread is the newest addition to the Liberty Threads Ultraflow™ quilting and sewing threads product line. Constructed using DuPont™ Kevlar® fiber, it’s TB 1633 compliant, can be colorized in any shade, leaves no residue or fly waste on equipment and has superior tested sewing performance in stitch formation.

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